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activation was employed during the leaching(mechanochemical leaching) of chalcopyrite concentrates in a sulfuric acid medium at room temperature and atmospheric pressure. High energy ball milling process...Mechanochemical leaching of chalcopyrite concentrate by sulfuric acidFarhad Khorramshahi Mohammadabad1,Sina Hejazi2,Jalil Vahdati khaki1,Abolfazl Babakhani11. Materials and Metallurgical Engineering......
of millscale from steel plant and the effects of the liquid-solid ratio, the reaction temperature, the leaching time and the sulfuric acid excessive times was investigated. The best technical conditions of the leaching process were ascertained, and the kinetics of leaching was studied. The results show that when liquid-solid ratio is 3?1, the sulfuric acid excess is 1.25 times, reaction temperature......
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removal of leachate from coal fly ash sintered by concentrated sulfuric acid[J]. Journal of Central South University(Science and Technology), 2016, 47(10): 3295-3301. U and Mo extraction from U-Mo ore...;Main chemical reactions thermodynamic calculation of U-Mo ore sulfuric during acid roasting process 铀钼矿硫酸焙烧过程主要化学反应如式(1)~(5)所示,可见UO2经O2和浓H2SO4先氧化为UO3,然后化合生成UO2SO4；而UO3直接与H2SO4化合为UO2SO4.胶硫钼矿MoS2则被O2和浓......
中和滴定法测定工业硫酸中硫酸含量的不确定度评定钱庆长1,唐满云2(1.安徽省铜陵市 铜陵有色金昌冶炼厂2.铜陵有色金昌冶炼厂,安徽铜陵 244100)摘 要:通过中和滴定法对工业硫酸中硫酸含量的不确定度来源进行分析,对测量过程中的主要不确定度分量进行了评定,包括测量的重复性,称取硫酸的量,硫酸的摩尔质量,称取邻苯二甲酸氢钾的量,邻苯二甲酸氢钾的摩尔量,滴定硫酸耗用的氢氧化钠标准滴定溶液的体积,滴定邻苯二甲酸氢钾耗用的氢氧化钠标准滴定溶液的体积等,并得出中和滴定法测量工业硫酸中硫酸含量的扩展不确定度.
to sulfuric acid. The pH was kept around 0.95 by adding concentrated sulfuric acid everyday. The dimensions of the concrete cylinders were 100 mm in diameter and 200 mm in length. Five evaluation indexes... University, Shanghai 200092, China) Abstract: In order to explore the effect of coarse and fine aggregate chemical composition on the concrete sulfuric acid corrosion resistance, accelerated corrosion......
Leaching of vanadium from stone coal with sulfuric acidWANG Mingyu, XIAO Liansheng, LI Qinggang, WANG Xuewen, and XIANG Xiaoyan School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China摘 要:The effects of roasting, mass ratio of H2SO4 to stone coal, leaching temperature, liquid-to-solid ratio, grinding fineness......
Preparation of manganese sulfate from low-grade manganese carbonate ores by sulfuric acid leachingQing-quan Lin1,Guo-hua Gu1,Hui Wang2,Ren-feng Zhu1,You-cai Liu2,Jian-gang Fu21. School of Minerals... for preparing pure manganese sulfate from low-grade ores with a granule mean size of 0.47 mm by direct acid leaching was developed. The effects of the types of leaching agents, sulfuric acid......
Leaching kinetics of molybdenum from Ni-Mo ore in sulfuric acid solution with sodium peroxodisulfate as oxidantLIU Zhi-xiong(刘志雄)1, YIN Zhou-lan(尹周澜)2, CHEN Yi-guang(陈义光)3, XIONG Li-zhi(熊利芝)3(1.... College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China)Abstract:The leaching kinetics of molybdenum from Ni-Mo ore in sulfuric acid solution with sodium......
; 文献标志码:A Kinetics of lepidolite decomposition reaction in sulfuric acid solution ZHAO Xun, YANG Jing, MA Hong-wen, LIU Mei-tang, LIN Fei (School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China) Abstract: The decomposition of lepidollite in sulfuric acid solution was studied and the lepidolite concentrate from Sichuan province was obtained......
